| Chain and pair | ETH and H, on the network named at the top of this page | Robinhood Chain, ETH and HBTC | Robinhood Chain, ETH and HETH | BNB Smart Chain (BSC), BNB and HBNB |
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| Its own block (the unit of mining) | About seven minutes | 10 minutes | About seven minutes (414 seconds) | 5 minutes |
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| Fee on a trade | 10 % on a buy and on a sale. On a sale of Powered H it falls in steps to 3 % the longer the H is held | A fee that adjusts itself between 1 % and 10 %, the same on a buy and on a sale | A fee that adjusts itself between 1 % and 10 %, the same on a buy and on a sale | A buy fee that adjusts itself between 1 % and 10 %; the sell fee is one percentage point higher |
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| What mines | A buy from the protocol's liquidity. The fee paid is the Work. Sells earn none | A buy. The fee paid is the Work. Sells earn none | A buy. The fee paid is the Work. Sells earn none | A buy. The fee paid is the Work. Sells earn none |
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| How much new token a block hands out | Fixed by demand when the block gets its first buy. The part not released stays in the Vein | The scheduled amount, scaled by the block's Work against a Work target; at or above the target the block hands out the whole scheduled amount | The scheduled amount, scaled by the block's Work against a Work target; at or above the target the block hands out the whole scheduled amount | The scheduled amount, scaled by the round's Work against a Work target; at or above the target the round hands out the whole scheduled amount |
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| When a mining reward can be collected | About one day after its block. It never expires, and it is sent to the wallet once it reaches the payout minimum | After its block closes. It does not expire | Right after the block closes. It does not expire | From the start of the second round after it. It does not expire |
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| Buy walls below the price | Seven walls below an anchor. The anchor follows a time-weighted price; after a crash the walls are rebuilt lower only once the price has stayed below every wall across a block's end | Seven tiers of buy orders below an anchor price, which it calls the Burn Net | Seven buy orders at set depths below a reference price | Fourteen walls |
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| Who can add liquidity to the pool | Only the protocol itself | Not stated on its site | Not stated on its site | Only its own contracts |
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| Rewards for holding | Daily rewards in ETH and H for Powered H, and a sale fee that falls with holding time | None described on its site | None described on its site | None described on its site |
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| Bonds | Yes: ETH now for H from the Vein about one day later. The ETH goes to the walls | None described on its site | None described on its site | None described on its site |
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| Who can change the contract | No owner and no admin key. A new version becomes active only through the holders' vote | Its site states no owner, no admin keys and no upgrade path | Its site states no owner, no admin and no upgrade | Its site states no ongoing owner, and a coordinator used once at launch |
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| A way out for holders | Yes, once the holders have voted a new version in: leave with a share of the walls' ETH, or move to the new version | None described on its site | None described on its site | None described on its site |
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| Price and market cap in USD on its site | Yes, with the source and the age of the USD price | No USD figure and no market cap | Yes, from a named exchange rate | Yes, from a named price feed |
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